array difference

Question

I need to get the difference between these two arrays, I\'ve tried array_diff($array1,$array2) without success, any idea?

array1

Array
(
            


        

Answer 1

Maybe I'm misunderstanding, but can't you just do something like this for your specific problem?

$newStatuses = array();

foreach($array1 as $element1) {
    foreach($array2 as $element2) {
        if($element1['status'] == $element2['status']) {
            continue 2;
        }
    }

    $newStatuses[] = $element1;
}

Each element of $newStatuses will be an array with a 'status' element from array1 that was not in array2.

So, $newStatuses would be this:

Array
(
    [0] => Array
        (
            [status] => 61192106047320064
        )

)

Answer 2

have a look at this code, its part of cakephp but you may be able to adapt / rip it out

https://github.com/cakephp/cakephp/blob/master/cake/libs/set.php#L792

and the docs

http://book.cakephp.org/view/1496/diff

Answer 3

According to array_diff,

This function only checks one dimension of a n-dimensional array. Of course you can check deeper dimensions by using array_diff($array1[0], $array2[0]);.

Therefore you cannot diff the second dimension of these arrays directly.

Instead, maybe you can extract the status values with array_map, save as two 1-dimensional arrays, and then array_diff. If you have multiple keys, use a for loop.